body {
    margin: 0;
    padding: 0;
    font-family: "-android-system","MIcrosoft Yahei",sans-serif !important;
    background-color: #f3f3f3f3;

}

div,button,h1,h2,h3,h4,h5,h6,li,ul,p,span,ol,dl,dd,ul{
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
}

li {
    list-style: none;
}